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    <meta charset="UTF-8">
    <title>Title</title>
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<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
hello     <br>

<br>
list数据
<table>
        <tr>
         <td>序号</td>    
            <td>姓名</td>
            <td>年龄</td>
            <td>钱</td>
        </tr>
        
            <tr>
                <td>0</td>
                <td>小明</td>
                <td>20</td>
                <td>100,000</td>
            </tr>
        
            <tr>
                <td>1</td>
                <td>小红</td>
                <td>10</td>
                <td>100</td>
            </tr>
        
</table>
<br>
map数据
<table>
        <tr>
         <td>序号</td>    
            <td>姓名</td>
            <td>年龄</td>
            <td>钱包</td>
        </tr>
        
            <tr>
                <td>0</td>
                <td>小红</td>
                <td>10</td>
                <td>100</td>
            </tr>
        
            <tr>
                <td>1</td>
                <td>小明</td>
                <td>20</td>
                <td>100,000</td>
            </tr>
        
</table>
单个数据判断是否存在
<br>
<table>
        <tr>
         <td>序号</td>    
            <td>姓名</td>
            <td>年龄</td>
            <td>钱</td>
        </tr>
        
</table>
<br>
</body>
</html>